oc2g: Mount the factory partition in the correct place

This is needed for osmo-bts to properly transmit on OC2g because it
contains calibration values for the amplifier. Without the transmit
power will be really low (probably just what leaks through the amp).

recipes-bsp/base-files/base-files_sysmocom.inc

@@ -2,3 +2,5 @@ THISDIR := "${@os.path.dirname(d.getVar('FILE', True))}"
 FILESPATH =. "${@base_set_filespath(["${THISDIR}/files"], d)}:"
 
 PRINC="4"
+
+dirs755_append_oc2g = "/mnt/rom /mnt/rom/factory"

recipes-bsp/base-files/files/oc2g/fstab

@@ -0,0 +1,9 @@
+/dev/root            /                    auto       defaults              1  1
+proc                 /proc                proc       defaults              0  0
+devpts               /dev/pts             devpts     mode=0620,gid=5       0  0
+tmpfs                /run                 tmpfs      mode=0755,nodev,nosuid,strictatime 0  0
+tmpfs                /var/volatile        tmpfs      defaults              0  0
+
+/dev/mtdblock8       /mnt/rom/factory     jffs2      ro,sync,noatime,nofail       0  0 
+#/dev/mmcblk0p4       /mnt/storage         ext4       defaults,noatime,nofail              0  0
+